Pyeclib

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* Added support for ISA-L Cauchy
* Fixed memory leak in get_metadata
* Added soft warning log line when using liberasurecode <1.3.1

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* Updated name in setup.py to work with release tooling.

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* Updated liberasurecode dependency to 1.2.0.

* Fixed memory leak in get_segment_info (Launchpad bug 1604335).

* Properly return an error code if liberasurecode returns an
invalid fragment size.

* ECDriver() now requries "k" and "m" values to be passed in.

* Fix some requirements and installation instruction.

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* Eliminate spurious syslog messages and added cleaner
mechanism for querying all available backends on a system.

* Moved source code hosting from bitbucket to Openstack infra.
This is first release with Openstack Infra

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* Remove integrated liberasurecode - the prereq library is now
available in major deb/rpm based distros

* Eliminate liberasurecode-related rpath checks, library searches
and architecture validation

* Changes for compatibility with liberasurecode versions prior to
1.1.0

* Make VALID_EC_TYPES a runtime property - dynamically look for
liberasurecode EC schemes available at runtime

* More comprehensive unit test coverage

* Add travis-ci build config for automated build/tests

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* Eliminate pyeclib dependency on alloc functions internal to
liberasurecode

* Update include subdirs to be explicit

* Update internal liberasurecode version to 1.1.0